// LeetCode 1037 Valid Boomerang.cpp

class Solution {
public:
    bool isBoomerang(vector<vector<int>>& points) {
        return (points[1][0] - points[0][0]) * (points[2][1] - points[0][1]) !=
            (points[2][0] - points[0][0]) * (points[1][1] - points[0][1]);
    }
};